DatasheetsPDF.com

AD7817

Analog Devices
Part Number AD7817
Manufacturer Analog Devices
Description 10-Bit ADC
Published Mar 23, 2005
Detailed Description 01316-001 Data Sheet 4-Channel/Single-Channel, 9 μs, 10-Bit ADCs with On-Chip Temperature Sensor AD7817/AD7818 FEATUR...
Datasheet PDF File AD7817 PDF File

AD7817
AD7817

Overview
01316-001 Data Sheet 4-Channel/Single-Channel, 9 μs, 10-Bit ADCs with On-Chip Temperature Sensor AD7817/AD7818 FEATURES 10-bit ADC with 9 μs conversion time 1 AD7818 and 4 AD7817 single-ended analog input channels On-chip temperature sensor Resolution of 0.
25°C ±2°C error from −40°C to +85°C −55°C to +125°C operating range Wide operating supply range: 2.
7 V to 5.
5 V Inherent track-and-hold functionality On-chip reference (2.
5 V ± 1%) Overtemperature indicator Automatic power-down at the end of a conversion Low power operation 4 μW at a throughput rate of 10 SPS 40 μW at a throughput rate of 1 kSPS 400 μW at a throughput rate of 10 kSPS Flexible serial interface APPLICATIONS Data acquisition systems with ambient temperature monitoring Industrial process control Automotive Battery charging applications GENERAL DESCRIPTION The AD7817/AD7818 are 10-bit, single- and 4-channel analog-todigital converters (ADCs) with an on-chip temperature sensor that can operate from a single 2.
7 V to 5.
5 V power supply.
Each device contains a 9 μs successive approximation converter based around a capacitor digital-to-analog converter (DAC), an onchip temperature sensor with an accuracy of ±2°C, an on-chip clock oscillator, inherent track-and-hold functionality, and an on-chip reference (2.
5 V).
The on-chip temperature sensor of the AD7817/AD7818 can be accessed via Channel 0.
When Channel 0 is selected and a conversion is initiated, the resulting ADC code at the end of the conversion gives a measurement of the ambient temperature with a resolution of ±0.
25°C.
See the Temperature Measurement section.
The AD7817/AD7818 have a flexible serial interface that allows easy interfacing to most microcontrollers.
The interface is compatible with the Intel 8051, Motorola SPI and QSPI, and National Semiconductors MICROWIRE protocols.
For more FUNCTIONAL BLOCK DIAGRAMS REFIN VDD VIN1 VIN2 VIN3 VIN4 AD7817 TEMP SENSOR REF 2.
5V MUX SAMPLING CAPACITOR OVERTEMP B REG CHARGE REDISTRIBUTION DAC...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)